Exchange server does not have Audit Security Privilege on Domain Controller

Question

A message is being logged in the event viewer on the Exchnage server 2003 that says "Process IISIPMF1871F60-79B8-4815-9341-6555C7748FB7 -AP "EXCHANGEAPPLICATIONPOOL (PID=7360). Exchange Server server17.kawargroup.internal does not have Audit Security Privilege on Domain Controller server5.kawargroup.internal. This Domain Controller will not be used by DSAccess. "have run the policytest.exe & everything is fine:

Note that server10 & server20 were domain controllers , now they are not used but still in the active directory considered as DCs (they have crashed & I didn't remove them from Active Directory)-I have other another 3 Exchange servers in different 3 sites but belongs to the same domain , have noted that this error message appears on all exchange servers , except for the one that is on server5 (that is also the Primary DC)-every site has it own DC & exchange should connect to its local DC-also all exchange servers are in the "Exchange servers" security Group & this group is inside the Users OU in the Active Directory.-the server [server17] Exchange services hanged once 2 days ago & restarted the Exchange services , everything till now is fine.

My question :1.is this error message that appeared in the event viewer caused this server to hang, & how can we fix this error message.2.can servers 10 & 20 inexistance cause any interruption in the Exchange functionality .3.will this error affect other exchange servers ? till now they are working well .

So what is causing this error "Exchange Server server17.kawargroup.internal does not have Audit Security Privilege on Domain Controller server5.kawargroup.internal" to be logged in the event viewer?

As described in the Microsoft articles on this event ID: 2112 I have followed the instructions & nothing seems to be wrong:1.checked with policytest.exe tool - all is fine 2.checked the security groups in Active Directory , all exchange servers are in the "Exchange servers" security Group & this group is inside the Users OU in the Active Directory.

So how can I solve this error message ? it is logged on all exchange servers except the one that is on server5 .

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